TY  - BOOK
AU  - Gustafson, A F
TI  - Soils and soil management 
SN  - 9788177540680
U1  - 631.4 
PY  - 2013///
CY  - Jodhpur 
PB  - Agrobios 
KW  - Soil organisms
KW  - Erosion of the soil
KW  - Soil Acidity
KW  - Nitrogen
ER  -